Abstract
The Majorana Collaboration has assembled an array of high purity Ge detectors to search for neutrinoless double-beta decay in 76Ge with the goal of establishing the required background and scalability of a Ge-based next-generation ton-scale experiment. The Majorana Demonstrator consists of 44 kg of high-purity Ge (HPGe) detectors (30 kg enriched in 76Ge) with a low-noise p-Type point contact (PPC) geometry. The detectors are split between two modules which are contained in a single lead and high-purity copper shield at the Sanford Underground Research Facility in Lead, South Dakota. Following a commissioning run that started in June 2015, the full detector array has been acquiring data since August 2016. We will discuss the status of the Majorana Demonstrator and initial results from the first physics run; including current background estimates, exotic low-energy physics searches, projections on the physics reach of the Demonstrator, and implications for a ton-scale Ge-based neutrinoless double-beta decay search.
Original language | English |
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Article number | 012023 |
Journal | Journal of Physics: Conference Series |
Volume | 1342 |
Issue number | 1 |
DOIs | |
State | Published - Jan 20 2020 |
Event | 15th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2017 - Sudbury, Canada Duration: Jun 24 2017 → Jun 28 2017 |
Funding
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, the Particle Astrophysics and Nuclear Physics Programs of the National Science Foundation, and the Sanford Underground Research Facility.
Funders | Funder number |
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Sanford Underground Research Facility | |
National Science Foundation | |
U.S. Department of Energy | |
Office of Science | |
Nuclear Physics |